The dress closes / adjusts by clamping / tying links of the neck. The opening under the arms decreases as it strengthens ties. In the photo, the links are tightened to the maximum, which is not the best effect on a slightly plump morphology or when you have a strong chest. However, simply loosen a bit, stretching the neck to the width of the shoulders and gives a great effect clearance of this area. The disadvantage with this modification is that the dress back down a bit under the arms and reveals a little lingerie there. Nothing vulgar, I am not shocked by, the whole being elegant. We just have to adapt her lingerie to coat color.
The dress is perfect addition to hide the tummy. The belt comes with the black model (thin braided belt) is satisfactory, not great quality but it suits the dress. It may well frown, adjust the size as desired: low, normal, empire based on its morphological or desires.
Concerning the length, it happens to me above the ankles (I measure 1m62). The lining is fine (about knee) and reveals nothing. I think the dress is suitable up to size 44.
I do not deprive myself of buying the same model and color of wine you recommends.
Note the seller and other reasons or uni were appreciable.